K 10
svn:author
V 4
khng
K 8
svn:date
V 27
2021-09-03T19:07:51.231628Z
K 7
svn:log
V 750
AMD-vi: Fortify IVHD device_identify process

- Use malloc(9) to allocate ivhd_hdrs list. The previous assumption
  that there are at most 10 IVHDs in a system is not true. A counter
  example would be a system with 4 IOMMUs, and each IOMMU is related
  to IVHDs type 10h, 11h and 40h in the ACPI IVRS table.
- Always scan through the whole ivhd_hdrs list to find IVHDs that has
  the same DeviceId but less prioritized IVHD type.

Sponsored by:	The FreeBSD Foundation
MFC with:	74ada297e897
Reviewed by:	grehan
Approved by:	lwhsu (mentor)
Differential Revision:	https://reviews.freebsd.org/D29525

(cherry picked from commit 6fe60f1d5c39c94fc87534e9dd4e9630594e0bec)

Git Hash:   f8b5f7426f0fbb3e9dfa08d6c9d3f14380245681
Git Author: khng@FreeBSD.org
END